Which one should i get i am looking at these ATM
http://www.amazon.com/gp/product/B008D1JKF4/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
http://www.amazon.com/MSI-DisplayPort-PCI-Express-N670-2GD5/dp/B008BGXYAS/ref=sr_1_1?s=electronics&ie=UTF8&qid=1360563031&sr=1-1&keywords=MSI+670
http://www.amazon.com/gp/product/B008D1JKF4/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
http://www.amazon.com/MSI-DisplayPort-PCI-Express-N670-2GD5/dp/B008BGXYAS/ref=sr_1_1?s=electronics&ie=UTF8&qid=1360563031&sr=1-1&keywords=MSI+670